ESLint v9.0.0; ESLint Config Inspector; Bun 1.1; JavaScript Signals; learn JavaScript; numbers in JS

“We just pushed ESLint v9.0.0, which is a major release upgrade of ESLint. This release adds some new features and fixes several bugs found in the previous release. This release also has some breaking changes […]”

Highlights:

• Flat config is now the default and has some changes
• Removed all formatters except stylish, html, json, and json-with-meta
• Updated eslint:recommended
• New rule: no-useless-assignment
• Updates to existing rules
• Changes to how you write rules

• Support for Windows
• Large projects start 2× faster
• Built-in library for cross-platform shell scripting
• Improvements and fixes to Bun’s support for Node.js APIs
• Improvements and fixes to web APIs

“Several framework authors are collaborating here on a common model which could back their reactivity core. The current draft is based on design input from the authors/maintainers of Angular, Bubble, Ember, FAST, MobX, Preact, Qwik, RxJS, Solid, Starbeam, Svelte, Vue, Wiz, and more…”

“The plan for this proposal is to do significant early prototyping, including integration into several frameworks, before advancing beyond Stage 1. We are only interested in standardizing Signals if they are suitable for use in practice in multiple frameworks, and provide real benefits over framework-provided signals. We hope that significant early prototyping will give us this information.”